Television antenna



y 1951 M; D. ERCOLINO 2,559,149

TELEVISION ANTENNA Filed May 23, 1950 3 Sheets-Sheet 1 I VENTOR MB ErcoZz'n 0 ATTORNEYS July 3, 1951 M. D. ERcouNo 255,149

TELEVISION ANTENNA Filed May 23, 1950 3 gheets-Sheet 2 5 INVENTOR Ere 0 Z 2 72.0

v ATTORNEYj M. D. ERCOLINO TELEVISION ANTENNA July 3, 1951 3 Sheets-Sheet 5 Filed May 23, 1950 INVENTOR Eraall A'ITORNEYS Patented July 3, 1951 UNITED STATES PATENT OFFICE 3 Claims.

This invention relates to television antennas and more particularly a closed end conical stacked dipole mounted forwardly of a reflector and carried by a generally rectangular frame and suittion to provide a self-supporting antenna array suitable for mounting in an attic or storage space.

Another object is to provide an antenna array capable of receiving high frequency electromagnetic waves over all of the television and/or micro-wave bands.

A further object is to provide an antenna that is simple and inexpensive of construction and is capable of favoring desired signals from" one direction while excluding unwanted Signals.

A still further object is to provide an antenna so designed that it inherently provides a satisfactory match to a convention transmission line of either the twin lead or coaxial type.

With these and other objects in view that may appear as the description proceeds, the present invention consists in the novel arrangement of cooperating parts as hereinafter more specifically set forth, claimed, and shown in the drawings in which like numbers refer to like parts in the different views.

In the drawings:

Figure 1 is a plan view of the present invention.

Figure 2 is an end elevation of the antenna array of this invention in operating position.

Figure 3 is a side elevation taken on line 33 of Figures 1 and 2, showing details of the support frame.

Figure 4 is a detail view taken on line 4-4 of Figure 3.

Figure 5 is a detail view taken on line 5-5 of Figure 1.

Figure 6 is a detail view of the reflector bond in partial section.

Figure 7 is a detail view taken on line 1-1 of Figure 6.

Figure 8 is a detail view taken on line 88 of Figure 2.

Referring now in detail to the drawing the antenna of this invention is shown generally by the numeral I0 and is comprised of a pair of stacked dipoles ll having ends l2 hingedly carried by a frame I3 to which is also attached a reflector l4 spaced therefrom. The frame I 3 is formed generally rectangular and is comprised of a horizontal top member 15 spaced from a horizontal bottom member 16 by pairs l1 and I8 of vertical members bolted to the extreme ends of the horizontal members as best illustrated in Figure 3. This assemblage of parts is secured together by suitable bolts l9 that extend through the metal strips l1 and I8 as well as the horizontal top and bottom members [5 and I6 which are formed of insulating or non-conducting material such as wood. At each end of the pairs of strips I! and I8 are provided right angularly disposed end portions 20 arranged as mount means extending out from the surface of the strips. Ends 20 of the strips l1 and I3 are aper-' tured to receive a mounting bolt or pivot means 2| positioned laterally of said strips. The strip ends 20 are spaced inwardly from the outer edge of the horizontal members 15 and It just sufficiently to allow for positioning of pivots 2| approximately flush with the outer edge surfaces of these members.

The dipoles l I are formed of a plurality of tubing sections 22 cut to provide for oppositely disposed right angle triangular frames or cones 23 having the hypotenuse sides 24 of said triangles disposed from the vertical strips I1 and I8 and extending angularly therefrom. Said sections 24 have ends 25 flattened and angularly displaced suitable for mounting on pivot bolts 2| with an opposite end 26 flattened for attachment to a vertical member 27 of similar construction having a flattened portion 38 secured to the ends 26 by suitable bolt means 39 and extending from one end 28 of the outer side 22 of said triangle with said vertical 21 forming the other side of the triangle and positioned at right angles to section 22. This same construction is repeated in all of the cones 23 that constitute the stacked dipole array of this antenna with the dipoles II swingingly attached to the pair of vertical strips ll. This arrangement of the dipoles provides a unique V beam antenna system designed to be efficiently responsive over the entire television band range and is capable of adjustment to cancel out undesired signals by forward tilting of said dipoles as found necessary. The desired signals are picked up at a point spaced midway between the apexes of the dipoles from the conducting strip I! by a twin lead 300 ohm transmission line 29 or any suitable radio frequency transmission line connected to the dipoles at the points 30 and 3| as best illustrated in Figure 2.

Spaced rearwardly of the dipoles I I is a reflector means l4 formed of a pair of reflector panels 32 and 33 of similar construction as that of the dipoles swingingly attached to the pair of vertical strips l8 making it possible for the reflector panels to be adjusted for parallel or angular positioning relative to the dipoles H. The refiector panels 32 and 33 act as parasitically driven elements effectively spaced from the driven dipoles H and are normally disposed at right angles to the frame l3. However, I have found that under certain conditions angular displacement of the panel 32 and 33 rearwardly of the frame 13 will effect clearer reception .of ,certain desired signals not otherwise attained. Refiector panels 32 and 33 are electrically bonded together by a bond means 34 bonded to .the strips [8 as at 35 and 36 as best illustrated in Figures 6 and '7. Bond 34 is of a predetermined length and functions to electrically lengthen the refiectors 32 and 33 with respect to the dipoles H while retaining the same physical dimensions. Such construction simplifies manufacture and assembly as both the dipoles and reflectors can be made interchangeable.

It is preferable that all of the parts of antenna II] or at least a greater portion thereof be separable so as to provide for demountability for conveying to the point of use in a knockdown condition. This .type of construction is highly desirable as it lends itself well to mounting of the array supported by an attic floor 31 or similar building construction.

7 The form of the invention illustrated and described herein is the preferred embodiment of the present assemblage in the form now commercially manufactured; however, it is to be understood that this embodiment is for illustrative purposes .only and it is pointed out that various modifications and alterations may be made within the scope of the appended claims.

I claim: v

1. A demountable television antenna comprising a frame having oppositely spaced pairs of conducting strips, each of said strips being.

separated from an adjacent strip and the said pairs spaced apart by a pair of non-conducting cross bars disposed at the ends of said strips, the ends of said strips being formed with right angularly disposed lugs, a dipole having adjacent ends swingingly carried by said lugs with outer ends angularly adjustable for forwardfbendingof said dipole, and a reflector means carried by the other pair of strips having oppositely disposed sides hingedly connected to spaced lugs of'the strips with said strips bein electrically bonded together.

2. A demountable television antennacomprising a frame formed with oppositely spaced pairs opposite sides disposed parallel to said strips,

the adjacent sides of two of the triangles being disposed in the same plane, a reflector means carried by -a pair of parallel strips spaced from the first mentioned pair of strips, said reflector being comprised of independently swinging oppositely extended arms having inner ends pivotally attached to said spaced abutments of an adjacent strip, said arms being formed with bottom members horizontally adjustable in the same plane, and a conducting means extending between said arms.

3. A demountable antenna comprising a frame engageable with a plane surface, said frame being formed with a plurality of spaced conducting members spaced apart by non-conducting spacing members, opposed abutments carried by said conducting members, a stacked conical dipole carried by said conductin members, said dipole being formed with spaced poles formed generally rectangular with outer sides disposed from said conducting members and intermediate members extending at an acute angle from opposite corners to connect with one of said outer sides of each pole, said poles being disposed between opposed abutments at said opposite corners and pivotally connected thereto for swinging movement about the ends of said conducting members to vary the unidirectional characteristics of said dipole, with a transmission line connected to said poles, and a reflector means having electrically connected extended arms pivotally carried by conducting members spaced'from said first mentioned members for swingin adjustment with said dipoles.

MICHAEL D. ERC'OLINO.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date D. 156,399 Baldi Dec. 13, 1949 2,175,253 Carter Oct. 10, 1939 2,199,050 Jenkins Apr. 30, 1940 2,535,049 De Rosa Dec. 26, 1950 

